Magnetic resonance studies of photosynthetic reaction centers and porphyrins

Technical Report · Sat Dec 31 23:00:00 EST 1988

OSTI ID:5164810

Van Willigen, H

In our studies, the kinetics and mechanism of photooxidation of porphyrins is investigated by monitoring the Electron Spin Resonance (ESR) signals of the paramagnetic species involved in the reaction. Magnetic resonance methods employed include conventional (cw) ESR, time-resolved cw ESR, and Fourier Transform (FT) ESR. The methods make it possible to measure the kinetics of formation and decay of photogenerated triplet and doublet free radicals and to get a direct insight into the role spin state selectivity plays in the electron transfer process.

• Research Organization: Massachusetts Univ., Boston, MA (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: FG02-84ER13242
• OSTI ID: 5164810
• Report Number(s): DOE/ER/13242-5; ON: DE90005423
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140505* -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
BACTERIA
BIOCHEMICAL REACTION KINETICS
CARBOXYLIC ACIDS
CHLOROPHYLL
DOCUMENT TYPES
ELECTRON TRANSFER
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
KINETICS
MAGNETIC RESONANCE
MICROORGANISMS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHOTOSYNTHETIC REACTION CENTERS
PHYTOCHROMES
PIGMENTS
PORPHYRINS
PROGRESS REPORT
PROTEINS
REACTION KINETICS
RESONANCE